Home / 3,187.31-4,397.77-1,789.97

Finding the Fourth Proportional to 3,187.31, 4,397.77 and 1,789.97

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Solution

The fourth proportional to 3,187.31, 4,397.77 and 1,789.97 is: 2,469.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,187.31 : 4,397.77 = 1,789.97 : x
  2. Step 2: Convert to fraction form
    3,187.31/4,397.77 = 1,789.97/x
  3. Step 3: Cross multiply
    3,187.31x = 4,397.77 × 1,789.97
  4. Step 4: Simplify right side
    3,187.31x = 7,871,876.37
  5. Step 5: Solve for x
    x = 7,871,876.37/3,187.31
  6. Step 6: Final answer
    x = 2,469.76

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.